“The Fire of the Aish Kodesh: Remembering the Piaseczner Rebbe with Rav Shlomo Katz” is a moving collection of shiurim honoring the holy Aish Kodesh — Rav Kalonymus Kalman Shapira of Piaseczno, may Hashem avenge his blood (הי״ד). From within the darkness of the Warsaw Ghetto, the Rebbe’s Torah burned with unimaginable light, teaching how faith, courage, and love of Hashem can endure even in the shadow of destruction. Each year on his yahrzeit, Rav Shlomo Katz guides us into the Rebbe’s writings and spirit, bridging his words to the challenges and hopes of our own generation.